From owner-freebsd-bugs@freebsd.org Wed Apr 22 01:06:31 2020 Return-Path: Delivered-To: freebsd-bugs@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id CBE5C2C0918 for ; Wed, 22 Apr 2020 01:06:31 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.nyi.freebsd.org (unknown [127.0.1.3]) by mx1.freebsd.org (Postfix) with ESMTP id 496MhR560Cz4Sw0 for ; Wed, 22 Apr 2020 01:06:31 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id AF3AF2C0917; Wed, 22 Apr 2020 01:06:31 +0000 (UTC) Delivered-To: bugs@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id AF02F2C0916 for ; Wed, 22 Apr 2020 01:06:31 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 496MhR4HVJz4Svy for ; Wed, 22 Apr 2020 01:06:31 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 7613CA744 for ; Wed, 22 Apr 2020 01:06:31 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 03M16VID044258 for ; Wed, 22 Apr 2020 01:06:31 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 03M16VPI044257 for bugs@FreeBSD.org; Wed, 22 Apr 2020 01:06:31 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 229741] kevent is not properly adding EVFILT_READ and EVFILT_WRITE for unix sockets when used in one call Date: Wed, 22 Apr 2020 01:06:30 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 10.1-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Many People X-Bugzilla-Who: kevans@freebsd.org X-Bugzilla-Status: Closed X-Bugzilla-Resolution: Works As Intended X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc resolution bug_status Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 22 Apr 2020 01:06:31 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D229741 Kyle Evans changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |kevans@freebsd.org Resolution|--- |Works As Intended Status|New |Closed --- Comment #2 from Kyle Evans --- The root of the problem here is that EV_RECEIPT on the first event will halt processing because nevents =3D=3D 0; this is common amongst {Net,Free,Open}= BSD, at least. EV_RECEIPT should only be set on the last event you're passing in to get the semantics you're wanting; if an error happens on any event before that one you'll get the same EV_ERROR return (if feasible) and will not drain the qu= eue. If no error happens, you'll hit that one and still not drain the queue beca= use EV_RECEIPT is set. Here's the diff I applied to your example: <<